--- a/gp_cppsupport/printoutput.cpp	2010-10-15 10:55:28.625469726 -0400
+++ b/gp_cppsupport/printoutput.cpp	2010-10-15 10:55:34.785077184 -0400
@@ -87,7 +87,7 @@
 {
 	const char *str;
 	str=FindString("Driver");
-	if(str[0]=='p' && str[1]=='s')	// Are we printing in PostScript mode?
+	if(str && str[0]=='p' && str[1]=='s')	// Are we printing in PostScript mode?
 		SetDataType(PQINFO_POSTSCRIPT);
 	else
 		SetDataType(PQINFO_RAW);